PC in a briefcase?

Level1Techs INBOX.deb
1

I saw this ( http://uk.pcpartpicker.com/b/CcO ) on PCPartPicker and I wanted to know if it could be done?

2

Here's something simillar with photos of actually assembled PC. Article is in russian though.

http://habrahabr.ru/post/171415/

3

The PCPartPicker one was assembled too 

4

Stripped shuttle pc?

5

Would an APU be good?